be such an ass-kisser
用作表语，such a 加强语气，指某人的表现。
He's such an ass-kisser when the boss is around.
老板在场时，他真是个马屁精。
马屁精；谄媚者
为获取个人利益而讨好他人的人；马屁精
a person who flatters or ingratiates themselves with someone in order to get a personal advantage
为获取个人利益而讨好他人的人；马屁精
a person who tries to please someone in order to gain a personal advantage
He's such an ass-kisser, always agreeing with everything the boss says.
他真是个马屁精，总是对老板说的每句话都表示同意。
用法提示：使用名词形式，主语为ass-kisser，表示爱拍马屁的人。
Nobody likes an ass-kisser who only flatters others to get ahead.
没人喜欢那种只为了往上爬而奉承别人的马屁精。
用法提示：宾语为ass-kisser，指代爱拍马屁的人，强调其行为令人反感。
Her colleagues think she's an ass-kisser because she always brings coffee for the manager.
她的同事认为她是个马屁精，因为她总是给经理带咖啡。
用法提示：表语为ass-kisser，描述一个人的性格或行为模式。
用作表语，such a 加强语气，指某人的表现。
He's such an ass-kisser when the boss is around.
老板在场时，他真是个马屁精。
call 后接宾语，再接名词短语作宾语补足语。
She called him an ass-kisser for agreeing with everything the manager said.
她骂他是个马屁精，因为经理说什么他都同意。
like 后接名词，表示“表现得像……”。
Stop acting like an ass-kisser and tell us what you really think.
别再表现得像个马屁精了，告诉我们你真实的想法。
grammar · medium
易错句子He is ass-kisser in our office.
正确表达He is an ass-kisser in our office.
ass-kisser 是可数名词的单数形式，单独使用前必须有冠词或限定词；汉语没有冠词系统，说“他是我们办公室的马屁精”时不需要任何冠词，所以学习者容易漏掉。这里 ass-kisser 以元音 /æ/ 开头，要用 an 而不是 a。
grammar · medium
易错句子There are three ass-kisser in our team.
正确表达There are three ass-kissers in our team.
ass-kisser 是可数名词，前面有 three 这类大于一的数词时，名词必须加复数词尾 -s。汉语名词本身不标复数，数量只由“三个”承担，因此学习者常忘记给可数名词加 -s。
意思基本相同，但语体差别很大：sycophant 是正式书面词，常见于评论政治、媒体或职场中的奉承者，语气偏冷静分析；ass-kisser 是粗俗口语，带明显轻蔑和侮辱色彩，正式场合或当面对人都不宜使用。
与 ass-kisser 所指几乎重合，都可指为讨好上级而殷勤的人，主要在粗俗程度和地域上不同：brown-noser 的粗俗程度稍轻，多见于北美日常口语；ass-kisser 更直白冒犯。两者都属非正式用语，正式文书里通常改用 sycophant 一类词。
侧重不同：yes-man 强调对上级一味赞同、从不反对，重点是“附和”；ass-kisser 强调为获取私利而奉承讨好，重点是“讨好换取好处”。单纯听话不奉承的人可称 yes-man，但一般不说 ass-kisser。
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